This paper describes an application of electronic speckle photography to measurement of through-the-thickness displacements in composites. Purpose is to assess the accuracy of this technique in presence of the strong gradients and rotations at the layer interfaces of these materials. The software for data acquisition and processing was in-home developed. Experimental results quantifying the thickness distribution of in-plane and transverse displacements in laminated beams are reported for some kinds of beams with metallic, polymeric and carbon fibre layers, to assess the influence of different constituent materials and optical properties. The experimental results are compared with the predictions of a theoretical model previously developed by the author, substantiated by the exact elasticity solution. In all the examined cases, electronic speckle photography appeared suited to accurately measure displacements with a magnitude of technical interest.
|Titolo:||Through-the-thickness displacements measurement in laminated composites using electronic speckle photography|
|Data di pubblicazione:||2003|
|Digital Object Identifier (DOI):||10.1016/S0167-6636(02)00195-3|
|Appare nelle tipologie:||1.1 Articolo in rivista|